. An illustrated flora of the northern United States, Canada and the British possessions, from Newfoundland to the parallel of the southern boundary of Virginia, and from the Atlantic Ocean westward to the 102d meridian. Botany; Botany. Genus 92. GRASS FAMILY. 257 13. Poa autumnalis Muhl. Flexuous Spear-grass. Fig. 616. Poa autumnalis Muhl.; EH. Bot. S. C. & Ga. 1: 159. 1817. P. flexuosa Muhl. Gram. 148. 1817. Not J. E. Smith, 1803. Culms i°-3° tall, erect, slender, simple, smooth and glabrous. Sheaths usually much shorter than the inter- nodes; ligule i" long; blades 1" wide or
. An illustrated flora of the northern United States, Canada and the British possessions, from Newfoundland to the parallel of the southern boundary of Virginia, and from the Atlantic Ocean westward to the 102d meridian. Botany; Botany. Genus 92. GRASS FAMILY. 257 13. Poa autumnalis Muhl. Flexuous Spear-grass. Fig. 616. Poa autumnalis Muhl.; EH. Bot. S. C. & Ga. 1: 159. 1817. P. flexuosa Muhl. Gram. 148. 1817. Not J. E. Smith, 1803. Culms i°-3° tall, erect, slender, simple, smooth and glabrous. Sheaths usually much shorter than the inter- nodes; ligule i" long; blades 1" wide or less, smooth beneath, rough above, those of the culm i4'-6' long, the basal much longer; panicle 3'-$)' in length, the branches long and slender, spikelet-bearing at the extremities, 2'-$' long; spikelets 3-5-flowered, 2V-3" long; empty basal scales acute, the first i-nerved, narrow, shorter than the broad 3-nerved second; flowering scales rounded or re- tuse at the apex, iJ"-2" long, not webbed at the base, pubescent on the lower part, 5-nerved, the midnerve silky-pubescent for three-fourths its length. In woods, New Jersey to Missouri, south to Florida and Texas. 14. Poa sylvestris A. Gray. Sylvan Spear-grass. Fig. 617. Poa sylvestris A. Gray, Man. 596. 1848. Culms i°-3° tall, erect, slender, simple, slightly flat- tened, smooth, glabrous. Sheaths shorter than the ternodes; ligule i" long or less; blades smooth beneath, rough above, i"s" wide, those of the culm i4'-6' in length, the basal much longer; panicle 3'-/ in length, the branches spreading or ascending, often reflexed in age, li's' long, spikelet-bearing at the extremities; spikelets 2-4-flowered, i"-2" long; empty basal' scales acute, the lower 1-nerved, the upper longer and 3-nerved; flowering scales about ij" long, webbed at the base, obtuse, often pubescent below, 5-nerved, the midnerve pubescent nearly its entire length and the marginal nerves belo
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectbotany, bookyear1913
